#include<iostream>
using namespace std;
int main()
{
	int max, a,b,c, day;
	max = 0;
	for (int i = 1; i < 8; i++)
	{
		cin >> a >> b;
		if ((a + b) > max && (a + b > 8))
		{
			max = (a + b);
			day = i;
		}
	}
	cout << day;
	return 0;
}